1. remove split checking and cross-ref code from DNE.
2. remove IAM code on ldiskfs and utils.
3. remove cmm directory.
Change-Id: I0c81d753462863706e8918393369dde94a45030c
Signed-off-by: Wang Di <di.wang@whamcloud.com>
Reviewed-on: http://review.whamcloud.com/4353
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>